Texas Instruments TLV809L30DBVR

Overview

TLV809L30DBVR from Texas Instruments is a 3-pin push-pull supply voltage supervisor IC designed for undervoltage monitoring and power-on reset generation in embedded digital systems. It features a fixed 2.64 V detection threshold (V_IT–), 200 ms reset delay (t_d), 9 µA typical supply current, and operates across –40°C to +85°C. It is used to ensure reliable boot-up of DSPs, microcontrollers, and FPGAs during power ramp-up.

For engineers reviewing the TLV809L30DBVR datasheet, TLV809L30DBVR pinout, TLV809L30DBVR application, or TLV809L30DBVR equivalent, key selection criteria include its precise 2.64 V trip point, push-pull RESET output with no external pull-up required, SOT-23 (DBV) package compatibility, and immunity to fast VDD transients per t_w = 10 µs specification.

Technical Context

The TLV809L30DBVR implements a precision bandgap-based voltage reference and comparator to monitor VDD against a factory-trimmed 2.64 V threshold with ±3% tolerance over temperature. Its internal oscillator-driven timer initiates a fixed 200 ms (typical) delay after VDD exceeds V_IT–, ensuring stable system initialization before deasserting the active-low RESET signal.

RESET is a push-pull output capable of sinking 5 mA and sourcing –5 mA, eliminating need for external pull-up resistors. The device asserts RESET when VDD falls below 2.64 V or remains below 1.1 V, and enters high-impedance state only during deep under-voltage (<1.1 V), supporting clean power-down sequencing.

Key Specifications

Pinout & Package

SOT-23 (DBV) 3-pin surface-mount package (2.90 mm × 1.60 mm body size, 1.45 mm max height); RoHS-compliant, NIPDAU lead finish, MSL Level-1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar supply voltage supervision applications.

Compared with TLV809K33DBVR, TLV809L30DBVR offers earlier reset assertion for 3.0 V systems; compared with MAX809TRD23+T, it reduces component count and improves noise immunity by eliminating the pull-up resistor and associated parasitic capacitance.

Availability

TLV809L30DBVR is available at Aetrix Electronics and suitable for factory automation, smart energy meters, and networked HVAC controllers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TLV809L30DBVR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for industrial, automotive, and consumer markets.

The TLV809 family is part of TI's precision voltage supervisor product line, engineered specifically for reliable power sequencing and reset generation in resource-constrained embedded systems with strict power and layout constraints.

FAQ

What is the exact detection threshold voltage of the TLV809L30DBVR?

The TLV809L30DBVR has a factory-trimmed negative-going input threshold voltage (V_IT–) of 2.64 V, with guaranteed limits of 2.58 V (min) and 2.70 V (max) over the full –40°C to +85°C operating temperature range. This value is confirmed in Section 7.5 Electrical Characteristics of the official TI datasheet SLVSA03F.

Does the TLV809L30DBVR require an external pull-up resistor on the RESET pin?

No, the TLV809L30DBVR features a push-pull RESET output stage, meaning it actively drives both high and low states without needing an external pull-up resistor. This is explicitly stated in the Pin Functions table (Pin 2 description) and distinguishes it from open-drain alternatives like the TLV803 series.

What is the reset delay time of the TLV809L30DBVR, and is it adjustable?

The TLV809L30DBVR provides a fixed internal reset delay time (t_d) of 200 ms (typical), with a guaranteed range of 120 ms to 280 ms. This delay starts when VDD rises above the 2.64 V threshold and cannot be adjusted externally-no capacitors or resistors are supported, as confirmed in Section 7.7 Switching Characteristics.

Can the TLV809L30DBVR monitor a 5 V supply rail?

Yes, the TLV809L30DBVR supports VDD inputs from 2 V to 6 V per Section 7.3 Recommended Operating Conditions, making it compatible with 5 V rails. However, its 2.64 V threshold is optimized for 3.0 V systems; for 5 V monitoring, TI recommends the TLV809I50DBVR (4.55 V threshold) to maintain appropriate dropout margin.

What package type and marking does the TLV809L30DBVR use?

The TLV809L30DBVR uses the SOT-23 (DBV) 3-pin package with a 2.90 mm × 1.60 mm body size and is marked "VTXI" on the top surface. This is verified in the Package Option Addendum and Device Information tables of the TI datasheet SLVSA03F, and matches the orderable part number suffix "DBVR".